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Effects of Annealing Temperatures on Microstructure and Fatigue Properties of Different Hot Rolled Al-Cu-Mg-Ag Alloy Sheets
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Qian JIANG, Zhiyi LIU, Song BAI, Guangyu HE
Mining and Metallurgical Engineering | 2026, 46(2) : 179 - 183
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Mining and Metallurgical Engineering | 2026, 46(2): 179-183
• MATERIALS •
Effects of Annealing Temperatures on Microstructure and Fatigue Properties of Different Hot Rolled Al-Cu-Mg-Ag Alloy Sheets
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Qian JIANG, Zhiyi LIU, Song BAI, Guangyu HE
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  • School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
doi: 10.3969/j.issn.0253-6099.2026.02.029
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Al-Cu-Mg-Ag alloy sheets prepared at different hot rolling temperatures (450 ℃ and 470 ℃) were annealed at 340, 360, 380 and 400 ℃ respectively. Subsequently, room-temperature tensile tests, fatigue crack growth tests, metallographic microscope, scanning electron microscope (SEM) and X-ray diffraction (XRD) were employed to investigate the effects of hot rolling and annealing processes on the microstructure and mechanical properties of the T4-tempered alloy. The results indicate that temperatures of hot rolling and annealing exert little influence on the room-temperature mechanical properties and fatigue crack growth rate of T4-tempered Al-Cu-Mg-Ag alloy. Hot rolling at elevated temperatures leads to the increase in the amount of static precipitates, which can in turn result in finer recrystallized grains during the subsequent annealing process.

Al-Cu-Mg-Ag alloy  /  grain refinement  /  precipitated phase  /  grain structure  /  fatigue property  /  annealing
蒋倩, 刘志义, 柏松, 何光宇. 退火温度对不同Al-Cu-Mg-Ag热轧合金板微观组织及疲劳性能的影响. 矿冶工程杂志, 2026 , 46 (2) : 179 -183 . DOI: 10.3969/j.issn.0253-6099.2026.02.029
Qian JIANG, Zhiyi LIU, Song BAI, Guangyu HE. Effects of Annealing Temperatures on Microstructure and Fatigue Properties of Different Hot Rolled Al-Cu-Mg-Ag Alloy Sheets[J]. Mining and Metallurgical Engineering, 2026 , 46 (2) : 179 -183 . DOI: 10.3969/j.issn.0253-6099.2026.02.029
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Year 2026 volume 46 Issue 2
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doi: 10.3969/j.issn.0253-6099.2026.02.029
  • Receive Date：2025-11-15
  • Online Date：2026-10-08
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  • Received：2025-11-15
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    School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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